Transport attachment for implement



p 1968 D. A. MOCALLUM 3,402,938

TRANSPORT ATTACHMENT FOR IMPLEMENT Filed Oct. 10, 1966 2 Sheets sheet l22 37 36 23 Nil. 0 w

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P 1968 D; A. MCCALLUM 3,402,938

TRANSPORT ATTACHMENT FOR IMPLEMENT Filed Oct. 10, 1966 2 Sheets-Sheet 2INVENTOR DONALD A. MCCALLUM ATTY United States Patent 3,402,938TRANSPORT ATTACHMENT FOR IMPLEMENT Donald A. McCallum, Burlington,Ontario, Canada, as-

signor to International Harvester Company, Chicago, 111., a corporationof Delaware Filed Oct. 10, 1966, Ser. No. 585,349 3 Claims. (Cl.280-4317) .ABSTRACT OF THE DISCLOSURE This invention relates toagricultural implements, particularly to an implement of the tractordrawn type, and an object of the invention is the provision of a noveltrar1sport attachment for an implement.

Another object of the invention is the provision of transport meansquickly attachable to an implement and including novel means for raisingthe working tools above the ground for transporting the implement overhighways and the like.

Other objects and advantages of the invention will become clear from thefollowing detailed description when read in conjunction with theaccompanying drawings wherein:

FIGURE 1 is a view in side elevation of the rear end of an implement,the forward end of which is connected 'to .a tractor to be propelledthereby, having a transport attachment connected thereto embodying thefeatures .of this invention;

FIGURE 2 is a partial plan view of a portion of the structure shown inFIGURE 1;

FIGURE 3 is a sectional view similar to FIGURE 1 showing the transportattachment prior to movement of the implement to its transport position;and

FIGURE 4 is a sectional view similar to FIGURE 3 showing the transport.attachment in the transport position of the implement.

In the drawings the numeral designates the frame of a grain drill ofwell-known construction, the forward end of which is adapted to beconnected to a tractor in draft receiving relation and which includeslongitudinally extending laterally spaced side bars 11, only one ofwhich is shown, .and two or more laterally spaced bars 12, only one ofwhich is shown carrying at their rear ends a transverse platform 13, theends of which are secured to side bars 11.

Conventional furrow opener units 14 are mounted on the implement frame,and a press wheel carrier 15 extends transversely of the implement framerearwardly of the furrow opener units .14 and is mounted on the frame bytwo or more laterally spaced straps 16, only one of which is shown, theforward ends of which are connected to an angle bar 17 secured to theunderside of frame 10. Bracing the strap 16 is a hanger 18 connected tothe strap and to an angle 19 affixed to side bars 11.

A plurality of press wheels 20 are mounted on carrier 15, one for eachfurrow opener unit 14, .and in normal operation support the rear portionof the implement. In order to transport the implement over highways andthe like, a transport attachment is provided and designated by thenumeral 21. The attachment comprises laterally spaced longitudinallyextending beams 22 the forward end of each of which is pivotallyconnected at 23 between a 3,402,938 Patented Sept. 24, 1968 pair of lugs24 affixed to member 12. The rear ends of member .12 are connected by atransverse frame member 25, and forwardly thereof by a member 26, theends of which extend laterally beyond the frame members 12.

A vertically extending bracket 27 is secured to and extends downwardlyfrom the rear end of each frame member 22 and has pivotally connectedthereto at 28 one end of a wheel-carrying arm 29 the other end of whichcarries a stub axle 30 upon which is mounted a wheel 31.

Also mounted on stub axle 30 between wheel 31 and arm 29 is a vaultingor actuating arm 32. Arm 32 is pivoted medially of its end on axle 30and a ground engaging foot 33 is provided at one end of the arm at adistance from the axis 30 greater than the radius of wheel 31 so that,upon swinging of arm 32 and foot portion 33 from the position of FIGURE3 to that of FIGURE 4, a vaulting effect is imparted to the wheels 31.In order to accomplish this and to lift the implement frame 10, thetransport frame 21 is operatively locked to the implement frame by meanscomprising spaced brackets 34 affixed to and depending from transversebar 26, a link 35 being pivotally connected at its upper end to bracket34 and having its lower end bent into a hook shape as at 36 to partlyencircle carrier 15. Another link 37 is bent to engage the opposite sideof carrier 15 and is connected at its ends to link 35. Transport carrier21 is thus held against vertical swinging movement about the pivot 23 onthe implement frame and the implement is ready to be moved intotransport position.

In the position of parts shown in FIGURE 3, wheel arm 29 is disposedgenerally in a horizontal direction toward the line of travel and footportion 33 of actuating arm 32 engages the ground just ahead of thecontact point of wheel 31 with the ground. The end of arm 32 oppositefoot 33 engages a stop member 38 carried by a strap 39 affixed to therear portion of bear 22. Due to the reaction of foot 33 against theground and of the other end of arm 32 against stop 39, forward motion ofthe implement frame 10 causes wheel arm 29 to swing counterclockwiseabout pivot 28, causing actuating arm 32 to also swing counterclockwiseuntil foot portion 33 reaches the position of FIGURE 4. In this position.arm 29 engages a stop 40 on lug 27 and openings 41 and 42 in arm 29 andbracket 27, respectively, register, at which point axle 30 of the wheelis overcenter with respect to the pivot 28.

By virtue of the reaction of foot 33 against the ground and of the otherend of arm 32 against stop 38, forward motion of the implement raises itfrom the position of FIGURE 3 to that of FIGURE 4. In this position theupper end of arm 32 slides past stop 38, and a locking pin 43 isinserted in openings 41 and 42 to hold wheels 31 rigid with respect tothe frame in transporting the implement.

After the implement has been transported to the location desired thetransport mechanism 21 may be disconnected from the implement frame at23 and linkage 35, 37, disconnected from the carrier 15 and reconnectedto the transport frame in the position shown in FIGURE 1. The transportcarrier frame may be retained with the implement, if desired, as inFIGURE 1, in which case the transport frame rises and falls about theaxis of pivot 23. Arm 32 is then disposed horizontally as shown, andsuitable holding means, not shown, provided to hold the actuating arm 32in this position during operation of the implement.

As shown in FIGURE 4, the earth-working tools 14 and press wheels 20 areelevated above the ground during transport, and when the implement is tobe replaced in operation arm 32 is disposed with the foot portion 33forwardly of wheel 31 and is revolved counterclockwise until the foot 33engages the ground ahead of the wheel. Links 35 and 37 are againconnected to carrier 15 and the implement is again ready to be raised totransport position.

It is believed that the construction and operation of the novelimplement transport mechanism of this invention will be clearlyunderstood from the foregoing description. It should likewise beunderstood that the invention has been .described in its preferredembodiment and that modifications may be made therein without departingfrom the spirit of the invention or the scope of the appended claims.

What is claimed is:

1. In a transport attachment for an implement having a tool-carryingframe adapted for connection to a tractor, a transport frame connectedto said tool-carrying frame, a wheel arm, a wheel mounted on one end ofsaid arm, means pivotally connecting the other end of said arm to saidtransport frame for swinging of the wheel arm about its pivot axis froma generally horizontal position upwardly to a generally verticalposition, means responsive to forward motion of the implement forcausing said wheel arm to swing to said generally vertical position,comprising an actuating arm mounted on the axis of said wheel having alength from one end thereof to said axis greater than the radius of thewheel, said actuating arm having one end reactable against the ground inadvance of said wheel and effective, in response to forward movement ofthe tool-carrying frame, to elevate said toolcarrying frame and to causesaid wheel to vault forwardly to a position in advance of said one endof said actuating arm, and stop means on the transport frame rearwardlyof said wheel arm and engageable therewith to limit the upward swingingthereof.

2. In a transport attachment for an implement having a tool-carryingframe adapted for connection to a tractor, a transport frame connectedto said tool-carrying frame, a wheel arm, a wheel mounted on one end ofsaid arm, means pivotally connecting the other end of said arm to saidtransport frame for swinging of the wheel arm about its pivot axis froma generally horizontal position upwardly to a generally verticalposition, means responsive to forward motion of the implement forcausing said wheel .arm to swing to said generally vertical position,comprising an actuating arm mounted on the axis of said wheel having alength from one end thereof to said axis greater than the radius of thewheel, said actuating arm having one end reactable against the ground inadvance of said wheel and effective to raise the tool-carrying'frame inresponse to forward movement of the latter, said wheel arm beingswingable upwardly to an overcenter position with respect to a verticalline through the pivot of said wheel arm on the transport frame, stopmeans on the transport frame rearwardly of said vertical line engageablein said overcenter position with said wheel arm to limit the upwardswinging thereof, said actuating arm being pivoted medially of its endson said wheel axis and swingable with said wheel arm, and another ,stopmeans on the transport frame engageable with the other end of saidactuating arm, the ground engaging end of said actuating arm beingswingable to a position rearwardly of said wheel and the other end ofsaid actuating arm being disengaged from said other stop means when saidwheel arm moves to its overcenter position.

3. The invention set forth in claim 2, wherein means are provided forlocking said wheel arm in its overcenter position to maintain thetool-carrying frame in its raised position during transport.

References Cited UNITED STATES PATENTS 2,620,610 12/1952 Chambers172-240 2,738,634 3/1956 Garver 172240 X 2,921,640 1/1960 Roppel l72240LEO FRIAGLlA, Primary Examiner.

